Machine for turning tapers



A zforney Patehted 001;. 18, 1887.

(No Model.)

M. n. LUEHRS. MACHINE FOR TURNING PAPERS.

W/Z/VESSES n vrrzns. HMO-Lithographer. Wathingion. m:

NITED STATES PATENT OFFICE.

MICHEL D. LUEHRS, OF CLEVELAND, OHIO.

MACHINE FOR TURNING TAPERS.

$PECIFICATION forming part of Letters Patent No. 371,691, dated October 18, 1887.

Serial No, 533,742. (No model.)

To all whom it may concern.-

Be itknown that I, MIonEL D. LUEHRS, a citizen of the United States, residing at Cleveland, county of Ouyahoga, and State of Ohio, have invented certain new and useful Improvements in Taper Burning Machines; and I do hereby declare the following to be a description of the same, and of the manner of constructing and using the invention, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it appertains to construct and use the same, reference being had to the accompanying drawings, forming a part of this specification, the principle of the invention being herein ex plained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

This invention has for its object the construction of a turningmachiue that shall be automatic in its operation, and thus dispense with much ol'the expense which has heretofore been required for labor in the ordinary taperingmachines.

The principle employed in opening the dies for cutting the taper is the same already patented to me in United States Letters Patent No. 324,946, dated August 25, 1885, for boltcutter heads. In the ordinary form of tapercutting machine but one tool is used to dothe work, and the cutting-edge of this tool equals the length ofthe taper to be out. From this it is apparent, first. that a great power mustbe exerted to cut the taper, as the knife sometimes has a bearing its entire length, and, second, thatif, as often happens, the axle or other work to be tapered is of uneven hardness that part of the knife coming in contact with the harder portions will become dull and nicked,when it of courseno longer cuts an even taper and must be reground its entire length before it is of further use. In my taperingmachiue I use four small dies for cutting. These are easily removed, cheaply sharpened, and of small cost to renew when worn out.

My invention cheapens the cost of the work ing machine by lessened first cost for dies; by making it automatic, thus reducing the cost for labor; by reducing the amount of power required to do the work, as the dies, having but small beariug,do not require the power to run them the old style does; by reducing cost of sharpening and renewing dies; by doing away with the necessity for skilled mechanics to set the tools for cutting the paper, as in my machine a cheap boy can place the dies in position, and from that time until the work is finished the machine works auton'iatically,thus

enabling one man to run three or four ma chines.

Referring to the drawings, Figure l is avertical longitudinal sectional view. Fig. 2 1s a plan view. Fig. 3 is an end elevation. Fig. 4 is an elevation on line as w of Fig. 1. Fig.

5 is an edge view of the die.

A is the driving cog-wheel, which drives shaft B, which is connected to barrel C in the usual manner, and revolves said barrel 0 and die-ring D. Hard-metal bearing blades d are fitted into the periphery of barrel 0, and have bearing against corresponding bearing-blades, d, fitted in the inner periphery ofdie ring D. The die-ring is provided with inclined radial T-shaped slots e, into which are fitted the heads 12 of the dies E, these heads having the same inclination as the slot. The barrel is also provided with slotsf, through which the bodies of the dies are fitted. On the face of the barrel is a cap, g, to hold the dies in place. The die ring surrounds the barrel and is fitted loosely on it, being provided, as above noted, with bearing-blades to decrease the friction.

A round the die-ring is fitted a yoke, F, which permits the diering to revolve within it, and has bearing on face G ofthe machine-bed. Rigidly secured to the yoke are horizontal rods H, on either side of the die-ring, which reciprocate the die-ring on the barrel. The opposite ends of these rods H are fitted in posts h, rigid with feed carriage I. Sleeves i are adjustably secured on either side of the posts with some allowance for play. The feed-carriage is also provided with vise -jaws J, for holding the working metal. These jaws are moved by pinion j, meshing with cog k. The pinion is actuated by ha'ndwheel Z, and its shaft is provided with right-hand and left-hand threads, so as to keep the jaws of the vise at equal distance from the center.

The outer face, G, of the machine is provided on one side with rack in, and on the other with rack in, which respectively mesh with pinions 0 0, actuated by hand-wheels p p, attached to feed-carriage, thus furnishing a reciprocating hand mechanism forsaid carriage. On the underside of the barrel, and extending from the driving-wheel to the end of the feed carriage, is a shaft, K, secured at its one end to a cog-wheel, q, meshing with wheel q, attached to main shaft B, and of size equal to wheel q, thus making as many revolutions as the main shaft. The opposite end of this shaft is threaded and passes under the feed-carriage, to which it is connected and disconnected by clutchnuts 8 s, actuated by lever 1', moving pins tt, to which the nuts are connected in slots to u. The heads '0 of the dies E are formed separate from the dies and secured to the same in any suitable manner, as by a screw, w. the head and die is placed a piece of packing, x, in order to fit the die to its place and make the different dies of equal length. \Vhen the dies are worn, they may be removed from the head, turned end for end, sharpened, and repacked. The screw serves as a regulator. for by it the die may be drawn up or loosened in the head.

The operation of the machine is as follows: The metal to be tapered is placed in the visejaws, and by means of the handwheel Z the jaws are tightened. The feed-carriage is moved toward the die-ring by means of the handwheelsp p and connecting mechanism, and the sleeves are rigidly fastened on rods H at distances from die-ring suitable to the size of work to be donethat is, if the work be. large the die-ring should be forced outward and the dies will be moved from one another and increase the initial diameter of the taper-and in this case the distance from the post to the die ring will belessened. The sleeves between the post and die-ring having been suitably adjusted to this end and the sleeves on the opposite sides of the posts being secured a short distance from the posts, that when the taper is finished the feed-carriage may be moved back somewhat with the taper before the die-ring is moved, and thus free the taper from the diering, the lever r is moved and causes nuts 5 s to clutch shaft K. The main shaft B is now revolved, which causes the dies to revolve with it, and also the shaft K, which gradually moves the work-carriage toward the die-ring. As the carriage moves, the rods H are caused to move, and, being rigidly secured at one end to the yoke, which is in turn secured to the die-ring, move the die-ring in the same direction and to they same extent as the work-carriage moves. The heads of the dies are fitted in the inclined radial slots of the die-ring, and as the diering is gradually forced away from the advancing work-carriage the distance between the cuttingends of the dies is increased, and thus the work is tapered.

What I claim is- 1. In a taperturning machine, the combination, with dies, die-ring, and barrel, the two latter having radial slots in which the dies have bearing and being connected to a rotary shaft, of a work-carriage connected to a retary shaft and connected by intermediate pieces with said die-ring, substantially as set forth.

2. In a taper-turning machine, the combi- Between.

nation, with a die-ring provided on its inner peripheral face with a series of circumferential hard-metal bearings, of a barrel having on its outer periphery aseries of hard-metalbearings, the corresponding members of the two series being in contact with each other, substantially as set forth. 1

8. In a taper-turning machine, the combination, with dies, die-ring, and barrel, the two latter having radial slots in which the dies have bearing, said die-ring having lateral flanges, of a work-carriage and rods connecting said carriage and flanges, substantially as set forth.

4. In a tapenturning machine, the combination, with dies, die-ring, and barrel, the twov latter having radial slots in which the dies have bearing, said die-ring being provided with flanges, of a work-carriage provided with upright'supports having tubular bearings, and

rods connected at one end with the flanges and having bearing at their opposite ends in said supports, substantially as set forth.

5. In a taper-turning machine, the combination, with dies, die-ring, and barrel, the two latter having radial slots in which the dies have bearing, said die-ringsecured toa primary rotary shaft, of a work-carriage adjustably secured to a secondary rotary shaft and connected by intermediate connection with said die-ring, said two shafts being geared together, substantially as set forth.

6. In a turning-machine, the combination, with a barrel having die-slots and a die-ring having inclined radial slots, ofa die, and adieeap, andalongitudinallyadjusting device conneeting said two latter parts and adapted to adjust said die longitudinally relative to the cap, substantially as set forth.

7. In a turning-machine, the combination, with a barrel having die-slots and a die-ring having inclined radial slots, ofa die, acap, and a longitudinally-adjusting device connecting said two latter parts together, and packing intcrmediate of thedie-cap and die, substantially as set forth.

8. In a tapenturning machine, the combination, with dies, diering, and barrel, the two latter having radial slots in which the dies have bearing, of a work-carriage, and rods secured to said die-ring and said work-carriage, substantially as set forth. 7

9. In a taper-turning machine, the combination, with dies E, die-ring D, and barrel 0, the two latter having radi'al slots in which the dies have bearing, of work carriage I, pro vided with upright posts h, and rod H, secured at its two ends, respectively, with yoke F and said post h, substantially as set forth.

In testimony that I claim the foregoing to be my invention I have hereunto set my hand.

MICHEL LUEHRS.

Witnesses:

T. B. HALL, J. B. FAY.

IlC 

